30431944 has 16 divisors (see below), whose sum is σ = 59541120. Its totient is φ = 14554320.

The previous prime is 30431941. The next prime is 30431957. The reversal of 30431944 is 44913403.

It is a super-2 number, since 2×30431944² = 1852206431238272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30431941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82512 + ... + 82879.

It is an arithmetic number, because the mean of its divisors is an integer number (3721320).

Almost surely, 2^30431944 is an apocalyptic number.

It is an amenable number.

30431944 is a deficient number, since it is larger than the sum of its proper divisors (29109176).

30431944 is a wasteful number, since it uses less digits than its factorization.

30431944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165420 (or 165416 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 30431944 is about 5516.5155669136. The cubic root of 30431944 is about 312.2074283580.

It can be divided in two parts, 30431 and 944, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 30431944 in words is "thirty million, four hundred thirty-one thousand, nine hundred forty-four".